To get a meaningful answer I think you also have to look at all of the high-IQ people that don’t generate a lot of wealth. What you really should look at is the correlation between IQ and wealth generation on average. My intuition says that there is a correlation but not a super duper strong one. (For instance I doubt having a 180 IQ results in more wealth generation than a 150 IQ.) I think cognitive empathy, or the ability to understand others’ feelings and how they would react in a given circumstance, is just as important for wealth generation, if not more so. There are and have been functional autistic savants with very high IQ but low cognitive empathy that have not generated a lot of wealth.
I believe the ability to delay gratification, or think long-term, or whatever you want to call it, is more important than IQ for self-actualization. If you can’t override your impulses and force yourself to follow your rational conclusions, what good is your reasoning faculty? To put it in Daniel Kahneman’s terms, if you have difficulty getting your System 1 to use or go along with your System 2, it doesn’t matter how powerful your System 2 is. The Marshmellow Test experiment is a good indicator of this. The children that had inherent abilities to delay gratification did better later in life by many different measures, including wealth generation.
So this may be other-optimizing if you heed my anecdote, but contemplating my own swiftly approaching death (an idea I take from Stoicism) helps my procrastination. In the context of this article, I think it works because it decreases my impulsiveness by forcing me to view my time as a finite resource, thus reducing some (not all) hyperbolic discounting of rewards. When I get up in the morning, if I say to myself something like “I probably have less than 20,000 days left to live, and this is one of those days,” I find it easier to do tasks that my rational brain knows are more valuable to me, versus tasks that generate immediate reward chemicals in my animal brain. This visualization idea drives the point home even harder. When I am dying, I don’t want to look back on my life and see that I wasted days binge watching House of Cards or reading interesting articles instead of doing something worth writing an interesting article about. I think this technique gives an immediate reward through my recognition that I spent an extremely scarce resource efficiently, thus giving some immediacy to long-term goals.